Shaft-collar.



uruouxo AWN SY v T JJ-fw f PATENTED SEPT. 19, 190-5.

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N FILED 1130.12, 1904.

i fy/Ti UNITED STATES PATENT OFFICE.

SHAFT-COLLAR.

No. 799,963. I

Specification of Letters Patent.

Patented Sept. 19, 1905.

Application filed December 12, 1904. Serial No. 236,460.

To all whom it may concern:

Be it known that I, FRANKLIN T. BALDWIN,

of Baldwinsville, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in Shaft-Collars, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to the class of shaftcollars which are divided or split diametrically into correspondingly-shaped sections tied together by means of bolts passing through overlapping portions of the sections.

The object of the invention is to provide a diametrically divided or split collar which shall have its ends closely embracing the shaft and effectually braced by the central portion of the collar uniting the ends thereof throughout and disposed out of contact with the shaft.

The object of the invention is also to pro-, vide the collar-sections with large plain abutting end faces extending completely and unbroken across the sections, and thus simplify and cheapen the construction of the collar.

A further object of the invention is to dispose the tie-bolts of the sections out of line with each other and to prevent them from coming in contact with the shaft, and thus obviate interference with the setting of said bolts firmly in their coupling position in the collar, and the object, furthermore, is to obviate undue straining of the junction of the collar-sections by the set-screw which fastens the collar to the shaft; and to that end the invention consists in the improved construction and combination of the component parts of the collar and its attachment to the shaft, as hereinafter described and asillustrated in the accompanying drawings, in which- Figure 1 is an end view of my improved shaft-collar. Fig. 2 is a transverse section of the same, and Figs. 3 and 4 are inner face views of the collar-sections.

A represents the shaft, to which the collar is applied. Said collar is divided diametrically into two correspondingly-formed sections a a, each of which consists of end walls 6 b, embracing one-half of-the periphery of the shaft A and united by a central peripheral wall 6, which is formed with an internal cavity 0 to avoid contact of said central wall with the shaft .A.

The meeting ends of the collar-sections are formed with plain faces, as shown at f j, which faces extend diametrically from the inner to the outer periphery of the collar and arethus easily formed and fitted to abut at the joint of the sections. Each of the said collar-sections is formed with atongue d, extending from one end of-the section at the inner edge of the end face 7' and provided with a screwthreaded perforation c, which coincides with acorrespondingly-thread ed perforation 6', extending through the peripheral wall Z) of the collarsection. Into these perforations is inserted a tie-bolt f,which is terminated within the perforation 6, so as to prevent said bolt from coming in contact with the shaft, as shown in Fig. 2 of the drawings. The prevention of the said contact obviates the liability of interference with the setting of the tie-bolts firmly in their couplingposition in the collar.

The said tie-bolts are disposed in lines at 0pposite sides of and parallel with the abutting end faces j 7' of the collar-sections. This arrangement of the tie-bolts obviates cutting the screw-threaded perforations e 6' into the abutting faces if and contributes to the stability of the collar.

2, represents the set-screw, which passes through one of the collar-sections and engages the shaft A to fasten the collar thereto. To relieve the junction of the collar-sections from undue strain incident to the pressure of the set-screw upon the shaft, I place the said setscrew oblique to the plane of the end faces j j of the collar sections, as shown more plainly in Figs. 1 and 2 of the drawings.

The tie-bolts f f being maintained out of contact with the shaft obviates endwise compression of said bolts in fastening the collar to the shaft, in which operation the set-screw t bearing onone side of the shaft draws the end walls of the opposite collar-section tightly onto the shaft, as indicated by arrows and shown at b in Figs. 1 and 2 of the drawings.

What I claim as my invention is A shaft-collar composed of two equal sections, each consisting of end walls embracing one-half of the circumference of the shaft and united by a central peripheral wall disposed out of contact with the shaft, the meeting ends of said sections formed with plain abutting faces extending diametrically from the inner to the outer peripheries of the collar and a tongue extending from one end of each of the aforesaid central walls at the inner edge of the aforesaid abuttingface, tie-bolts passing through the central Walls and tongues and disposed in lines at opposite sides of and parallel with the plane of the abutting end faces and terminating Within the tongues, and the set-screw fastening the collar to the shaft and disposed oblique to the plane of the afore said abutting faces substantially as set forth and shown.

FRANKLIN T BALDWIN. [L s.] Witnesses:

J. J. LAASS, L. H. FULMER. 

